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    <title>Document</title>
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    <script>
        /*
            -使用function*可以声明一个generator状态机对象，yield关键字用来定义一个个的状态
            -调用generator函数后返回一个iterator对象，每次调用iterator对象上的next方法，可以执行一个yield后的状态
        */ 
       function*generator(){
           yield console.log(1);
           yield console.log(2);
           yield console.log(3);
           yield console.log(4);
           yield console.log(5);
           yield console.log(6);
       }

       const gen = generator();
       console.log(gen);
       gen.next();
       gen.next();
       gen.next();
       gen.next();
       gen.next();
       gen.next();
    </script>
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